OpenClaw before 2026.3.28 accepts unbounded concurrent unauthenticated WebSocket upgrades without pre-authentication budget allocation.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Apr 28, 2026 · NIST NVD

   Detected

   OpenClaw before 2026.3.28 accepts unbounded concurrent unauthenticated WebSocket upgrades without pre-authentication budget allocation. Unauthenticated network attackers can exhaust socket and worker capacity to disrupt WebSocket availability for legitimate clients.

2. Jun 17, 2026 · NIST NVD

   Updated

   OpenClaw before 2026.3.28 accepts unbounded concurrent unauthenticated WebSocket upgrades without pre-authentication budget allocation. Unauthenticated network attackers can exhaust socket and worker capacity to disrupt WebSocket availability for legitimate clients.

Affected

• cpe openclaw/openclawversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-41399

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-41399

  OpenClaw before 2026.3.28 accepts unbounded concurrent unauthenticated WebSocket upgrades without pre-authentication budget allocation. Unauthenticated network attackers can exhaust socket and worker capacity to disrupt WebSocket availability for legitimate clients.

  nvd.nist.gov

References

• Patch · github.com
• Third Party Advisory · vulncheck.com